Home / 115,440.21-159,305.94-64,453.72

Finding the Fourth Proportional to 115,440.21, 159,305.94 and 64,453.72

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Solution

The fourth proportional to 115,440.21, 159,305.94 and 64,453.72 is: 88,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,440.21 : 159,305.94 = 64,453.72 : x
  2. Step 2: Convert to fraction form
    115,440.21/159,305.94 = 64,453.72/x
  3. Step 3: Cross multiply
    115,440.21x = 159,305.94 × 64,453.72
  4. Step 4: Simplify right side
    115,440.21x = 10,267,860,109.83
  5. Step 5: Solve for x
    x = 10,267,860,109.83/115,440.21
  6. Step 6: Final answer
    x = 88,945.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.